20407995

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23869}}^1$

素因数の和:23899

約数の個数: 24

約数和(自身を含む): 37237200

約数和(自身を除く): 16829205

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 23869, 71607, 119345, 214821, 358035, 453511, 1074105, 1360533, 2267555, 4081599, 6802665, 20407995]

約数ペア:

[(1, 20407995), (3, 6802665), (5, 4081599), (9, 2267555), (15, 1360533), (19, 1074105), (45, 453511), (57, 358035), (95, 214821), (171, 119345), (285, 71607), (855, 23869)]